Odpowiedzi

2009-12-13T16:18:30+01:00
4(x+4) = 4x + 16

5(a2 - b -1) = 5a2 - 5b - 5

Pozdro :D
2009-12-13T16:19:56+01:00
2009-12-13T16:20:08+01:00
4(x+4) = 4x+16
5(a2-b-1) = 10a-5b-5